head to head
vs
Rock Band 2vsUm Jammer Lammy
Rock Band 2 leans Execution (Pure Mechanics); Um Jammer Lammy leans Execution (Pure Mechanics).
Rock Band 2Um Jammer Lammy
Axis by axis
Execution8 vs 8
Even - both lean on execution about the same.
Reads0 vs 0
Even - both lean on reads about the same.
Variance0 vs 1
Um Jammer Lammy leans harder on variance: Fixed songs, ad-lib scoring slightly opaque
Optimization4 vs 3
Rock Band 2 leans harder on optimization: Overdrive activation paths decide leaderboard scores
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.